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	1		Boyden, Stephen Vickers Biohistory: the interplay between human society and the biosphere : past and present / S. Boyden . — Paris ; Lans : UNESCO ; The Parthenon Publishing Group, [1992]. — 265 p. : gráf. ; 24 cm. — ( Man and the biosphere ; 8)
	2		Young, Michael Dennis Sustainable investment and resource use : equity, environmental integrity and economic efficiency / M. D. Young . — Paris ; Carnforth : UNESCO ; The Parthenon, 1992. — 176 p. ; 29 cm. — ( Man and the biosphere ; v. 9)